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Startups14,448Programs29

14,448 startups · 29 programs

Atomarine

Active · Floating nuclear powered data centers at sea.

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

A sum of public facts, not a judgement and not investment advice.

Competitors

AIFerveretShared: data center, energy, nuclearYC S21San FranciscoStartup →AIAstroShared: data center, energy, powerYC W25New York CityStartup →AIMarengoShared: data center, energyYC S26San FranciscoStartup →AIViraj AeroShared: data center, energy, coolingYC F26Startup →AIAtmetoShared: energy, power, buildingYC W23Los AngelesStartup →
Companies closest to Atomarine
Company
FerveretShared: data center, energy, nuclearYC S21ActiveAI
AstroShared: data center, energy, powerYC W25ActiveAI
MarengoShared: data center, energyYC S26ActiveAI
Viraj AeroShared: data center, energy, coolingYC F26ActiveAI
AtmetoShared: energy, power, buildingYC W23ActiveAI

Adjacent

AINetworkOceanShared: data center, floating, powerYC S24San FranciscoStartup →AILiquid EnergyShared: data center, energy, powerYC F26WaterlooStartup →AIVoxel EnergyShared: data center, energy, powerYC W26Startup →OtherNODI EnergyShared: data center, energy, powerYC X25LondonStartup →OtherApollo Atomics, Inc.Shared: nuclear, energyYC X26BostonStartup →
Companies next to Atomarine
Company
NetworkOceanShared: data center, floating, powerYC S24ActiveAI, Devtools
Liquid EnergyShared: data center, energy, powerYC F26ActiveAI
Voxel EnergyShared: data center, energy, powerYC W26ActiveAI
NODI EnergyShared: data center, energy, powerYC X25ActiveOther
Apollo Atomics, Inc.Shared: nuclear, energyYC X26ActiveOther

Also from S26

All of S26
AILibra RoboticsThe robot workforce for infrastructure of the AI eraYC S26San FranciscoStartup →AI83 SciencesAI-native materials discovery powered by unpublished experimental dataYC S26San FranciscoStartup →AIBaudAI chips for ultra-fast training and inferenceYC S26San FranciscoStartup →AIDaqstraAI-native test infrastructure layer for hardware companiesYC S26San FranciscoStartup →AIDipole LabsAI-controlled optical switching for AI clustersYC S26BostonStartup →AIEdviroAI That Operates Energy InfrastructureYC S26San FranciscoStartup →
Company
Libra RoboticsThe robot workforce for infrastructure of the AI erateam of 2ActiveAI
83 SciencesAI-native materials discovery powered by unpublished experimental datateam of 3hiringActiveAI
BaudAI chips for ultra-fast training and inferenceteam of 4ActiveAI
DaqstraAI-native test infrastructure layer for hardware companiesteam of 3ActiveAI
Dipole LabsAI-controlled optical switching for AI clustersActiveAI
EdviroAI That Operates Energy Infrastructureteam of 2hiringActiveAI, Devtools

About Atomarine

We are building nuclear power delivery ships to power our floating compute barges at sea. Our systems are fully standalone, have better cooling, and avoid all the resource competition that leads to local community opposition. Our centralized manufacturing allows us to deploy anywhere on Earth, four times faster than on land.

YC batch
S26 · Summer 2026
Status, per YC
Active
Category
Other
Team size
2
Location
San Francisco, CA, USA
Checked
13h ago

YC tags: Hard Tech, Energy

Atomarine in S26: 229 companies, 88% AI

Atomarine: questions

Which YC batch was Atomarine in?

Atomarine was in Y Combinator's Summer 2026 batch (S26).

Is Atomarine still active?

Y Combinator lists Atomarine as active.

Where is Atomarine based?

Atomarine lists San Francisco, CA, USA as its location on YC's directory.